About Star Ranch Dental

Star Ranch Dental is a one-of-a-kind dental practice offering general dentistry, cosmetic dentistry, and airway management (sleep dentistry) to patients in Plano, TX and surrounding areas of Dallas. Our relaxing, spa-like environment is the perfect way to experience high quality dental services with an experienced team focused on your personalized care and overall health.

Meet the Dentists

Dr. Peter Barnett

Born and raised in New York City, Dr. Peter Barnett spent many hours with his grandparents who were both dentists. He has spent the last 40 years in dental and health care management. He is a recognized leader in the dental insurance industry, as well as a respected businessman owning and managing practices for many years in the northeast and now in Texas. Dr. Barnett provides almost 40 years of experience and knowledge into his care of our patients. His philosophy is that all dentistry is cosmetic dentistry – with the goal of giving patients results that are not only functional but are also appealing to the eye. He strives to give his patients the best treatment available today to maintain healthy, functional teeth, while also recognizing his patient’s desire to improve their smiles. Dr. Barnett also focuses on the treatment of head, neck and jaw joint muscles and the nerve system that allows the jaw to function – through his Texas Headache Relief program. Additionally, Dr. Barnett offers an Airway Management program (also known as sleep dentistry) to help patients with moderate to mild sleep apnea. As periodontal disease can greatly impact the overall health of your mouth and entire body, Star Ranch Dental diligently educates on and delivers treatment programs designed to help patients eradicate the disease and maintain healthier gums for life. Our perio program is led and continually developed by Dr. Barnett. Dr. Barnett offers a level of expertise and experience our patients have come to rely on – and so can you.

Education & Background

Dr. Barnett attended dental school at the University of Pennsylvania School of Dental Medicine, graduating in 1977. He completed his residency at Eastman Dental Center in Rochester, New York. He is licensed to practice in five states: New York, New Jersey, Pennsylvania, Texas and New Mexico. Dr. Barnett has also been awarded a MBA in Healthcare Management from the Wharton School of Business. A published author of numerous articles on dentistry and health care, Dr. Barnett has served as a frequent lecturer at dental schools and elsewhere, and maintains membership in the Texas Dental Association and the American Dental Association. In addition, Dr. Barnett has also served on the board of CollaGenex from 1997 to 2008, a specialty pharmaceutical company focused on developing and marketing innovative branded products to the dental and dermatology markets, including Periostat, the first and only systemic pharmaceutical to treat periodontal disease. Through out his tenure at Collagenex he served and chaired on several committees. In his spare time, he enjoys reading a good spy novel, traveling and spending time with his family.

Dr. Courtney Geiger

Dr. Geiger was born in Midland, Michigan, spent her childhood on the sunny coast of southern California, and later moved to Indianapolis, Indiana. When she moved to Dallas to attend Southern Methodist University for college, she realized dentistry was the perfect combination of the fields in which she had always excelled – art and science. Dr. Geiger is always amazed at how a smile can transform a person’s well-being. She enjoys seeing the confidence a beautiful smile can give a person.

Education & Background

At SMU, Courtney was a Hunt Scholar, separating herself from her peers as a Golden Key Top 15 Freshman and a Mortar Board Top 10 Sophomore. She graduated Phi Beta Kappa from SMU with a degree in Chemistry and Business, and was excited for the opportunity to stay in Dallas to attend Baylor College of Dentistry. At Baylor, Courtney used her keen eye for detail to transform patients’ smiles. She was the recipient of The American Academy of Cosmetic Dentistry Award for Excellence for her achievements in cosmetic dentistry, as well as The Southwest Academy of Restorative Dentistry Award. Her most defining accomplishment was being named The Eleanor Bushee Senior Woman Dental Student of her graduating class. After graduation in 2010, Dr. Geiger was an associate dentist at a general practice in University Park where she sharpened her skills in endodontics, pediatrics, implant restorations, and cosmetic dentistry. She is an active member of the American Dental Association, International Team for Implantology, and Academy of General Dentistry. In her spare time, Dr. Geiger enjoys art, cooking, working out, spending time with friends and family, and traveling. She is a member of the Junior League of Dallas, Junior Associate of the Dallas Museum of Art, and Young Texans Against Cancer.

Meet Our Team


Patient Care Coordinator


Patient Care Coordinator


Dental Assistant
DMRT Therapist


Dental Assistant


Dental Hygienist


Dental Hygienist


Hygiene Assistant


Hygiene Assistant